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)(17,18,23,22)(19,21,25,27)(20,24,30,32)(26,31,29,28)(2,6)(7,8)(17,19)(18,21)(20,28)(22,27)(23,25)(24,26)(29,32)(30,31) involution — undirected(1,3,5,4)(2,7,6,8)(10,13)(14,16)(17,20,23,30)(18,24,22,32)(19,26,25,29)(21,31,27,28)(9,11,12,15)(10,14,13,16)(17,21,23,27)(18,25,22,19)(20,29,30,26)(24,28,32,31)(1,4,5,3)(2,8,6,7)(18,22)(19,27)(20,30)(21,25)(26,31)(28,29)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.