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