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