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