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