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