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