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