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