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