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