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