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