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