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