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