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