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