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