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