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