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