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