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