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