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