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