One vertex per element, one color per generator, with an edge from x to x·s.
(5,6)(7,8)(9,10,12,14)(11,13,15,16)(17,18)(19,25)(20,29)(21,23)(22,27)(24,30)(26,31)(28,32)(2,4)(9,11,12,15)(10,13,14,16)(17,19)(18,22)(20,26)(21,28)(23,31)(24,32)(25,29)(27,30)(1,2,3,4)(10,14)(13,16)(18,23)(22,31)(24,29)(25,32)(6,8)(19,26)(20,30)(22,32)(24,29)(25,31)(27,28) 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.