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