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