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