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