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