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