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