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