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