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