One vertex per element, one color per generator, with an edge from x to x·s.
(5,6,9,14,11,16,10,15)(7,13,18,12,8,19,17,20)(21,22,25,29,26,30,24,33)(23,27,31,35,32,36,34,28)(1,2)(3,4)(5,7,9,18,11,8,10,17)(6,12,15,13,16,20,14,19)(21,23)(22,27)(24,34)(25,31)(26,32)(28,33)(29,35)(30,36)(2,4)(5,8,11,7)(6,13,16,19)(9,18,10,17)(12,14,20,15)(21,23)(22,28)(24,31)(25,34)(26,32)(27,33)(29,36)(30,35)(5,9,11,10)(6,14,16,15)(7,17,8,18)(12,13,20,19)(21,24,26,25)(22,29,30,33)(23,31,32,34)(27,28,36,35)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.