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