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