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