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