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