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