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