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