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