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