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)(17,18,24,20,23,28,21,26)(19,25,30,29,27,32,31,22)(2,6)(3,4)(9,10)(11,14)(12,13)(15,16)(17,19)(18,25)(20,29)(21,31)(22,26)(23,27)(24,30)(28,32) involution — undirected(1,3,5,4)(2,7,6,8)(10,13)(14,15)(17,20,24,28,23,26,21,18)(19,29,30,32,27,22,31,25)(1,4,5,3)(2,8,6,7)(9,11,12,16)(10,14,13,15)(17,21,23,24)(18,26,28,20)(19,30,27,31)(22,25,29,32)(2,6)(7,8)(17,22,24,25,23,29,21,32)(18,27,20,31,28,19,26,30)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.