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)(17,18,21,25,22,24,29,32)(19,23,20,28,27,30,26,31)(1,3,5,4)(2,6,7,8)(9,11,12,15)(10,13,14,16)(17,19,22,27)(18,23,24,30)(20,29,26,21)(25,28,32,31)(17,20,21,19,22,26,29,27)(18,23,25,31,24,30,32,28)(1,4,5,3)(2,6,7,8)(10,14)(13,16)(18,24)(23,30)(25,32)(28,31)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.