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