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