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