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