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