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