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