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