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