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