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