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