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)(17,18,23,27)(19,28,30,24)(20,22,26,32)(21,25,31,29)(1,3)(2,6)(4,7)(5,8)(9,10)(11,15)(12,14)(13,16)(17,19)(18,24)(20,29)(21,32)(22,31)(23,30)(25,26)(27,28) involution — undirected(1,2,5,4)(3,6,8,7)(9,11)(10,13)(12,16)(14,15)(17,20,22,27,23,26,32,18)(19,29,31,28,30,25,21,24)(1,2,5,4)(3,7,8,6)(11,16)(13,15)(17,21)(18,25)(19,22)(20,24)(23,31)(26,28)(27,29)(30,32)(1,4,5,2)(3,7,8,6)(10,14)(13,15)(17,22,23,32)(18,26,27,20)(19,21,30,31)(24,29,28,25)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.