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