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