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