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