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