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