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