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