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