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