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