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