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