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