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