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