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