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