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