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