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