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