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