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