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