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