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