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