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