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