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