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