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