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