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