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