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