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