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