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