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