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