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