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