To the best of my knowledge, there is no such thing as a paper version of the official FSM. If you buy a new car and choose to purchase the service manuals Infiniti sends you a disk of files. My guess is that even the dealer service departments now use the pdf versions.
This site has the entire collection of many years of FSMs posted as pdfs. (HUGE thanks to NICO club for maintaining that for us owners). If there is a particular manual you need a hard copy of you can always download it and print the relevant pages.