One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,7)(4,6)(5,9)(8,13)(10,16)(11,15)(12,14)(17,18,22,19)(20,27,28,32)(21,26,31,24)(23,30,25,29)(2,6)(3,10)(4,13)(8,9)(11,12)(14,16)(17,19,22,18)(20,25,28,23)(21,24,31,26)(27,30,32,29)(1,3)(2,7)(4,12)(5,11)(6,14)(8,16)(9,15)(10,13)(17,20)(18,23)(19,25)(21,30)(22,28)(24,32)(26,27)(29,31) involution — undirected(3,11)(7,15)(10,12)(14,16) 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.