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