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