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