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