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