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