Mutable File System (MFS) is a tool built into IPFS that lets you treat files like you would a normal name-based filesystem — you can add, remove, move, and edit MFS files and have all the work of updating links and hashes taken care of for you.
Use whatever resources available to you, in order to come up with a visual representation of the topic that can be projected on to a poster (similar in spirit to the poster description but with whatever creative freedom your group prefers :^)
https://docs.ipfs.io/guides/concepts/mfs/
https://github.com/ipfs/go-mfs
https://github.com/ipfs/js-ipfs-mfs