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