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)(19,28,29,24)(20,25,30,32)(21,31,23,26)(1,3,4,8)(2,5,6,7)(17,19,22,29)(18,24,27,28)(20,23,30,21)(25,31,32,26)(10,13)(14,16)(17,19,23,20,22,29,21,30)(18,24,26,32,27,28,31,25)(17,20,23,29,22,30,21,19)(18,25,26,24,27,32,31,28)(9,11,12,15)(10,14,13,16)(17,21,22,23)(18,26,27,31)(19,20,29,30)(24,25,28,32)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.