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