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