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