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