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