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