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