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