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