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