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