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)(11,16)(12,14)(13,15)(17,18,20,22)(19,21,23,24)(25,26,30,31,29,28,27,32)(1,3,5,8)(2,6,4,7)(17,19,20,23)(18,21,22,24)(26,28)(31,32)(1,4,5,2)(3,7,8,6)(9,11,13,12)(10,14,15,16)(19,23)(21,24)(25,27,29,30)(26,31,28,32)(3,8)(6,7)(9,12,13,11)(10,14,15,16)(25,28)(26,29)(27,32)(30,31)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.