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