One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,4)(5,6)(7,11)(8,9)(10,12) involution — undirected(6,9)(10,11)(13,14,17,21,29,36,43,39,18,22,31,38,16,20,28,35)(15,23,25,32,24,40,42,34,27,41,44,33,26,37,30,19)(2,4)(13,15,18,27)(14,19,22,34)(16,24,29,26)(17,30,31,42)(20,32,36,33)(21,37,38,40)(23,39,41,35)(25,43,44,28)(5,7,8,12)(6,10,9,11)(13,16,18,29)(14,20,22,36)(15,24,27,26)(17,28,31,43)(19,32,34,33)(21,35,38,39)(23,40,41,37)(25,42,44,30)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.