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