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