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