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