What did you do to the photo in PS? That in itself will reveal a lot to indicate how to proceed. The grain, well -- fast film. Slide washes out. changes in exposure change saturation.
Remember, any effect you've seen in most any book or magazine prior to 1995 or so was almost certianly done in a darkroom (at which point the tide began to change -- not suddenly, but slowly. There are a few computerized manipulations before that time too, of course)