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