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