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