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