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