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