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