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