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