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