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