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