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)(11,15)(12,14)(13,16)(17,18,21,26)(19,28,29,24)(20,23,27,22)(25,30,32,31)(1,3,5,8)(2,6,4,7)(9,11,12,16)(10,13,14,15)(17,19,21,29)(18,24,26,28)(20,32,27,25)(22,31,23,30)(1,4,5,2)(3,7,8,6)(10,14)(13,15)(17,20,22,18,21,27,23,26)(19,28,30,25,29,24,31,32)(3,8)(6,7)(11,16)(13,15)(17,19)(18,25)(20,28)(21,29)(22,30)(23,31)(24,27)(26,32) 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.