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