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