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