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