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