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