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