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