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