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