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