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