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