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