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