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