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