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