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