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