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