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