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