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