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