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)(19,25,29,23)(20,30,31,24)(21,26,32,28)(3,7)(5,8)(9,10)(11,16)(12,14)(13,15)(17,19)(18,23)(20,28)(21,24)(22,29)(25,27)(26,31)(30,32) involution — undirected(1,2)(3,5)(4,6)(7,8)(9,11)(10,12)(13,14)(15,16)(20,31)(21,32)(24,30)(26,28) involution — undirected(11,14)(12,16)(17,20,22,31)(18,24,27,30)(19,28,29,26)(21,25,32,23)(1,3)(2,5)(4,7)(6,8)(9,12,13,16)(10,14,15,11)(17,19)(18,25)(20,26)(21,24)(22,29)(23,27)(28,31)(30,32)(1,2)(3,5)(4,6)(7,8)(9,10)(11,16)(12,14)(13,15)(17,21)(18,26)(19,24)(20,25)(22,32)(23,31)(27,28)(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.