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