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