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