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