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