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