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