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