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