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