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