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