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