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