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