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