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)(11,13,16,15)(17,18,22,20)(19,24,21,23)(25,26,29,28)(27,31,32,30)(1,3,5,4)(2,6,8,7)(9,11,14,16)(10,15,12,13)(17,19,22,21)(18,23,20,24)(27,32)(30,31)(9,10,14,12)(11,15,16,13)(17,19,22,21)(18,23,20,24)(25,27)(26,30)(28,31)(29,32)(1,4,5,3)(2,7,8,6)(9,12,14,10)(11,13,16,15)(17,20,22,18)(19,24,21,23)(1,2)(3,6)(4,7)(5,8)(9,13)(10,11)(12,16)(14,15)(17,21,22,19)(18,24,20,23)(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.