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