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