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