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