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