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