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