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