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