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