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