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