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