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