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