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