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