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