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