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