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