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