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