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