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