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