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