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