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