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