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