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