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