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