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