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