One vertex per element, one color per generator, with an edge from x to x·s.
(5,6)(7,11)(8,12)(9,10)(13,19)(14,17)(15,20)(16,18)(21,22,24,29,36,44,48,43,26,31,37,42,25,30,35,28)(23,27,33,40,46,51,52,49,32,39,45,50,34,41,47,38)(1,2)(3,4)(6,10)(11,17)(12,18)(19,20)(21,23)(22,27)(24,33)(25,34)(26,32)(28,38)(29,40)(30,41)(31,39)(35,47)(36,46)(37,45)(42,50)(43,49)(44,51)(48,52) involution — undirected(2,4)(5,7,9,14)(6,11,10,17)(8,15,16,13)(12,20,18,19)(22,28)(24,35)(25,36)(27,38)(29,30)(31,43)(33,47)(34,46)(37,48)(39,49)(40,41)(42,44)(45,52)(50,51)(5,8,9,16)(6,12,10,18)(7,13,14,15)(11,19,17,20)(23,32)(27,39)(33,45)(34,46)(38,49)(40,50)(41,51)(47,52)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.