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