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