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