What exactly is your goal? If the muscle is still beat up from the last workout, don't work it intensely (and you won't be able to work it intensely). Intensity is key for results even if volume and frequency are lowered. You HAVE to lower the volume and frequency if you want intensity or you WILL overtrain, including injury, not getting much of an exercise high (more of an exercise low after), and just delaying recovery.
Personally I don't know how some people can go to the gym 6 days a week and lift weights everyday. I'd shoot myself. That's monotonous and ineffective. Just lift intense one day, and then do something that's fun and cardio-like the rest of the days, assuming you're not overtraining particular muscles due to the cardio the other days. It is important to be physically active everyday, but just lifting weights is overemphasizing the resistance training component of the physical activity guidelines. You only need a little resistance training and a lot more time on just activity and metabolic fitness.
If you're going for just a puffed toned look, then don't lift intensely (ie stop lifting heavy), workout more frequently with more sets and reps. This maximizes the amount of time you'll look puffy per week. The above intense workouts are more performance and strength oriented, but you'll lose strength if you're just lifting light weight all the time.
Personally, I don't have time to go to the gym everyday (but physiologically speaking, I don't see the point of hypertrophy workouts other than aesthetics unless you're training for a particular aspect of fitness). Somedays, I'd rather do body weight stuff and run around my block, the local track, the parking garage, the lake, etc