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