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