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