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