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