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