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