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