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