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