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