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