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