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