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