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