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