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)(24,28)(25,29)(26,30)(27,33)(32,49)(34,47)(35,52)(36,44)(37,45)(38,46)(39,42)(40,48)(41,51)(43,50) involution — undirected(5,7,9,15)(6,10,11,13)(8,16,17,14)(12,20,19,18)(21,23)(22,27)(24,35)(25,33)(26,39)(28,43)(29,31)(30,47)(32,37)(34,38)(36,50)(40,51)(41,45)(42,46)(44,52)(48,49)(1,2,3,4)(21,24,25,36)(22,28,29,44)(23,32,33,51)(26,40,38,37)(27,41,31,49)(30,48,46,45)(34,50,39,35)(42,52,47,43)(6,11)(10,13)(12,19)(18,20)(22,29)(23,33)(24,36)(30,46)(34,39)(37,40)(41,49)(43,52) involution — undirected(5,8,9,17)(6,12,11,19)(7,14,15,16)(10,18,13,20)(23,34)(26,38)(27,42)(30,46)(31,47)(32,50)(33,39)(35,51)(37,40)(41,52)(43,49)(45,48)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.