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