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