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