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