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