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