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