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