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