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