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