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