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