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