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