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