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