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