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