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