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