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