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