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