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