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)(21,22,26,29)(23,32,24,35)(25,31,27,30)(28,34,36,33)(5,7,10,8)(6,11,9,12)(13,14,16,18)(15,20,19,17)(21,23,27,34,26,24,25,33)(22,28,31,35,29,36,30,32)(2,4)(5,8,10,7)(6,11,9,12)(13,15,16,19)(14,17,18,20)(22,29)(23,33)(24,34)(25,27)(28,35)(32,36)(5,9,10,6)(7,12,8,11)(21,24,25,34,26,23,27,33)(22,28,30,32,29,36,31,35)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.