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