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