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