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