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