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