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