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