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