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