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