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