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)(23,30)(24,28)(25,33)(26,29)(27,31)(32,35)(34,36)(1,2)(3,4)(5,7,11,9)(6,12,15,14)(8,17,10,18)(13,19,20,16)(24,25)(28,33)(30,35)(31,34)(2,4)(5,8,11,10)(6,13,15,20)(7,17,9,18)(12,19,14,16)(21,23,26,32)(22,27,29,36)(24,31,25,34)(28,35,33,30)(5,9,11,7)(6,14,15,12)(8,18,10,17)(13,16,20,19)(21,24)(22,28)(23,31)(25,26)(27,35)(29,33)(30,36)(32,34)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.