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