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