One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,7)(4,6)(5,8)(9,10,14,21)(11,24,27,17)(12,19,30,47)(13,23,16,20)(15,36,35,51)(18,43,45,31)(22,34,52,38)(25,54,57,40)(26,41,32,49)(28,62,61,66)(29,50,33,46)(37,48,65,44)(39,58,53,71)(42,60,55,64)(56,69,59,70)(63,68,72,67)(1,3)(2,5)(4,8)(6,7)(9,11,14,27)(10,17,21,24)(12,25,30,57)(13,32,16,26)(15,28,35,61)(18,39,45,53)(19,40,47,54)(20,49,23,41)(22,42,52,55)(29,59,33,56)(31,58,43,71)(34,64,38,60)(36,66,51,62)(37,63,65,72)(44,68,48,67)(46,70,50,69)(9,12)(10,18)(11,25)(13,29)(14,30)(15,37)(16,33)(17,39)(19,36)(20,44)(21,45)(22,46)(23,48)(24,53)(26,56)(27,57)(28,63)(31,38)(32,59)(34,43)(35,65)(40,66)(41,67)(42,70)(47,51)(49,68)(50,52)(54,62)(55,69)(58,60)(61,72)(64,71) involution — undirected(3,8)(5,7)(9,12)(10,19)(11,25)(13,33)(14,30)(15,31)(16,29)(17,40)(18,36)(20,50)(21,47)(22,48)(23,46)(24,54)(26,59)(27,57)(28,58)(32,56)(34,65)(35,43)(37,38)(39,66)(41,70)(42,67)(44,52)(45,51)(49,69)(53,62)(55,68)(60,63)(61,71)(64,72) involution — undirected(2,6)(5,7)(9,13,14,16)(10,20,21,23)(11,26,27,32)(12,29,30,33)(15,34,35,38)(17,41,24,49)(18,44,45,48)(19,46,47,50)(22,51,52,36)(25,56,57,59)(28,60,61,64)(31,37,43,65)(39,67,53,68)(40,69,54,70)(42,66,55,62)(58,72,71,63)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.