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