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