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