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