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