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