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