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