I have a book D3200 for dummies i will have a look through there for quiet mode.According to this (Nikon | Imaging Products | Easy operation - Nikon D3200) there is a Quiet Shutter Release mode available on using the options available when the Release Mode button is pressed. Not sure just how quiet it is, but apparently you can get 4 fps with it engaged as well.Don't have the camera, so I can't help you with specifics, but I bet if you read the manual....
I have this camera and yes you do have the quiet option..