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