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