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