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