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