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