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