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