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