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