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