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)(8,14)(13,16)(18,23,25,26)(19,27,28,29)(1,3,7,4)(2,8,11,16)(5,14,6,13)(9,15,12,10)(17,18)(19,24)(20,26)(21,23)(22,25)(27,30)(28,32)(29,31)(1,4,7,3)(2,9,11,12)(5,14,6,13)(8,15,16,10)(18,23)(20,21)(24,30)(25,26)(27,29)(31,32)(1,5)(3,13)(4,14)(6,7)(8,16)(10,15)(17,19,22,28)(18,24,25,32)(20,29,21,27)(23,30,26,31)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.