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