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