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)(15,25)(16,30)(17,24)(18,23)(19,22)(20,27)(21,32)(26,38)(28,36)(29,37)(31,35)(33,39)(34,40)(41,42)(43,44) involution — undirected(2,4)(7,8)(10,11)(13,15,19,29)(14,20,22,36)(16,31,34,26)(17,28,18,27)(21,38,39,35)(23,37,24,25)(30,41,40,44)(32,42,33,43)(5,7,9,8)(6,10,12,11)(13,16,19,34)(14,21,22,39)(15,26,29,31)(17,32,18,33)(20,35,36,38)(23,30,24,40)(25,41,37,44)(27,42,28,43)(5,8,9,7)(6,11,12,10)(14,22)(20,36)(21,39)(23,24)(25,37)(30,40)(35,38)(41,44)(6,12)(10,11)(13,17,19,18)(14,23,22,24)(15,27,29,28)(16,32,34,33)(20,25,36,37)(21,30,39,40)(26,42,31,43)(35,41,38,44)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.