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