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