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