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