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