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