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