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