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