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