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