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