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)(18,30,32,35)(21,28)(22,34)(23,29)(26,31,36,33)(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)(22,31)(23,32)(28,35)(29,36)(30,34)(7,17,19,20)(12,25,27,16)(18,31,32,33)(26,35,36,30)(1,3,4,2)(5,8,9,21,11,23,10,22)(6,13,14,28,15,29,24,34)(7,18,20,33,19,32,17,31)(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.