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