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