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