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