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)(17,18,23,29)(19,30,32,26)(20,25,31,24)(21,28,22,27)(2,4)(6,8)(17,19,22,20,23,32,21,31)(18,24,28,26,29,25,27,30)(5,6,7,8)(9,11,13,12)(10,14,15,16)(17,19,21,31,23,32,22,20)(18,25,27,26,29,24,28,30)(9,12,13,11)(10,14,15,16)(17,20,22,32,23,31,21,19)(18,26,28,25,29,30,27,24)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.