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