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