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