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