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