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