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