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