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