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