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