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)(21,22,25,35,26,31,27,30)(23,29,34,36,32,28,24,33)(1,2)(3,4)(6,11)(8,9)(12,19)(13,14)(15,20)(16,17)(21,23,27,24,26,32,25,34)(22,28,30,36,31,29,35,33)(2,4)(5,7,10,18)(6,12,14,15)(8,16,9,17)(11,19,13,20)(21,24)(22,29)(23,27)(25,32)(26,34)(28,31)(30,36)(33,35)(5,8)(7,16)(9,10)(11,13)(17,18)(19,20)(21,25,26,27)(22,30,31,35)(23,24,32,34)(28,33,29,36)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.