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