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