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)(17,18,22,25)(19,26,24,21)(20,28,29,27)(23,31,32,30)(1,3,5,4)(2,6,8,7)(9,11,14,10)(12,16,13,15)(17,18,22,25)(19,26,24,21)(20,28,29,27)(23,31,32,30)(10,11)(15,16)(17,19,21,18,22,24,26,25)(20,28,30,32,29,27,31,23)(9,12,14,13)(10,15,11,16)(17,20,21,30,22,29,26,31)(18,23,24,28,25,32,19,27)(1,4,5,3)(2,7,8,6)(9,13,14,12)(10,16,11,15)(20,29)(23,32)(27,28)(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.