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