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