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