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