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