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