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