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