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