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