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