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)(16,28,30,40)(17,22,19,34)(21,31,39,32)(25,41,29,44)(27,37,33,36)(35,42,38,43)(1,2)(3,4)(5,7,9,8)(6,10,11,12)(13,15,18,26)(14,20,23,24)(16,29,30,25)(17,33,19,27)(21,38,39,35)(22,37,34,36)(28,41,40,44)(31,42,32,43)(2,4)(13,16,18,30)(14,21,23,39)(15,25,26,29)(17,32,19,31)(20,35,24,38)(22,40,34,28)(27,43,33,42)(36,44,37,41)(1,2)(3,4)(5,8,9,7)(6,10,11,12)(15,26)(16,30)(20,24)(21,39)(27,33)(28,40)(31,32)(36,37)(2,4)(13,17,18,19)(14,22,23,34)(15,27,26,33)(16,31,30,32)(20,36,24,37)(21,28,39,40)(25,42,29,43)(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.