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