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