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