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