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