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)(17,18,22,20)(19,26,28,24)(21,23,30,25)(27,32,31,29)(2,6)(7,8)(9,11)(10,13)(12,15)(14,16)(17,19,22,28)(18,24,20,26)(21,31,30,27)(23,32,25,29)(1,3,5,4)(2,7,6,8)(17,20,23,30,22,18,25,21)(19,27,29,26,28,31,32,24)(11,15)(13,16)(17,21,23,20,22,30,25,18)(19,26,29,31,28,24,32,27)(1,4,5,3)(2,7,6,8)(18,20)(21,30)(24,26)(27,31)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.