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