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