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