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