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