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