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