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