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