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