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