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