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