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