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