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