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