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