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