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