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)(20,28)(21,26)(22,23)(24,29)(27,31)(30,32) involution — undirected(3,7)(6,8)(10,14)(11,15)(18,23)(20,29)(21,25)(27,30) involution — undirected(1,2,5,4)(3,6,7,8)(9,11,13,15)(10,12,14,16)(18,23)(19,26)(24,28)(27,30)(9,12)(10,15)(11,14)(13,16)(17,19)(18,21)(20,30)(22,26)(23,25)(24,32)(27,29)(28,31) involution — undirected(1,3)(2,6)(4,8)(5,7)(17,20)(18,24)(19,27)(21,31)(22,29)(23,28)(25,32)(26,30) involution — undirected(1,4,5,2)(3,8,7,6)(17,21)(18,19)(20,31)(22,25)(23,26)(24,27)(28,30)(29,32)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.