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