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