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