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