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