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