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