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