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