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