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)(17,18,21,23)(19,20,24,22)(25,26)(27,30)(28,32)(29,31)(10,14)(11,16)(17,19)(18,22)(20,23)(21,24)(25,27,29,32)(26,30,31,28)(10,14)(12,15)(18,23)(19,24)(25,27)(26,28)(29,32)(30,31) involution — undirected(1,2)(3,6)(4,5)(7,8)(9,11)(10,15)(12,14)(13,16)(17,20)(18,19)(21,22)(23,24)(25,27)(26,28)(29,32)(30,31) involution — undirected(1,3,4,7)(2,6,5,8)(9,12,13,15)(10,11,14,16)(17,19)(18,20)(21,24)(22,23)(25,28)(26,27)(29,30)(31,32)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.