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