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