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