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