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