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