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