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