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