One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,4,5)(3,6,7,8)(9,10,13,15)(11,16,12,14)(17,18)(19,22)(20,28)(21,25)(23,27)(24,30)(26,31)(29,32)(2,5)(6,8)(9,11,13,12)(10,14,15,16)(17,19)(18,22)(20,27)(21,26)(23,28)(24,32)(25,31)(29,30)(11,12)(14,16)(17,19)(18,23)(20,29)(21,26)(22,28)(24,31)(25,32)(27,30) involution — undirected(1,3,4,7)(2,6,5,8)(9,12,13,11)(10,14,15,16)(11,12)(14,16)(19,26)(22,31)(23,32)(27,29) involution — undirectedA Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.