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