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