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