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