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