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