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