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