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)(18,24)(19,20)(21,22)(25,32)(27,28)(30,31)(2,4)(9,11,13,12)(10,14,15,16)(17,18)(19,29)(20,25)(21,27)(22,24)(23,28)(26,31)(30,32)(1,2,3,4)(9,12,13,11)(10,14,15,16)(17,19,21,20,23,31,22,30)(18,25,24,29,28,32,27,26)(6,8)(17,20,21,31,23,30,22,19)(18,26,24,25,28,29,27,32)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.