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