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