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