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