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