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