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