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