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