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