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