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