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