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