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