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