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