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