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)(11,13)(12,14)(15,16)(17,18,23,28)(19,24,29,31)(20,25,22,27)(21,26,30,32)(2,5)(6,8)(9,11,12,15)(10,13,14,16)(17,19)(18,24)(20,30)(21,22)(23,29)(25,32)(26,27)(28,31)(10,14)(13,16)(17,20)(18,25)(21,30)(22,23)(26,32)(27,28) involution — undirected(1,3,4,7)(2,6,5,8)(17,21)(18,26)(19,20)(22,29)(23,30)(24,25)(27,31)(28,32)(17,20)(18,25)(19,29)(22,23)(24,31)(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.