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