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