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