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