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