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