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)(19,23)(20,22)(21,28)(24,27)(25,31)(26,30)(29,32)(1,3,5,13,7,8,6,14)(2,4,9,12,10,15,11,16)(18,22)(19,25,26,29)(23,31,30,32)(24,28)(1,4)(2,8)(3,10)(5,12)(6,16)(7,15)(9,14)(11,13)(17,19)(18,23)(20,26)(21,29)(22,30)(24,31)(25,27)(28,32) 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.