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