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