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