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