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