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)(11,15)(12,14)(13,16)(17,18,21,22)(19,25,27,23)(20,24,30,29)(26,28,32,31)(2,5)(6,8)(9,11)(10,13)(12,16)(14,15)(17,19,21,27)(18,23,22,25)(20,28,30,31)(24,26,29,32)(1,3,4,7)(2,6,5,8)(10,14)(11,16)(17,18,21,22)(19,23,27,25)(20,29,30,24)(26,28,32,31)(10,14)(13,15)(17,20)(18,24)(19,26)(21,30)(22,29)(23,31)(25,28)(27,32) involution — undirected(2,5)(6,8)(10,14)(13,15)(20,30)(24,29)(26,32)(28,31) 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.