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