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