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)(11,16)(12,13)(14,15)(17,18)(19,23)(20,24)(21,22)(25,26)(27,31)(28,30)(29,32)(2,6)(3,8)(9,11)(10,12)(13,14)(15,16)(18,22)(19,24)(25,26,28,30)(27,31,32,29)(3,8)(4,7)(10,15)(11,13)(17,19,21,24)(18,23,22,20)(25,26,28,30)(27,29,32,31)(1,3)(2,4)(5,8)(6,7)(9,12,14,16)(10,11,15,13)(17,19)(18,23)(20,22)(21,24)(25,27)(26,29)(28,32)(30,31)(1,4)(2,3)(5,7)(6,8)(9,13,14,11)(10,16,15,12)(17,20,21,23)(18,19,22,24)(25,26)(27,29)(28,30)(31,32)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.