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