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