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