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