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