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