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