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