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