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