One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,8)(4,7)(5,9)(6,10)(11,13)(12,15)(14,16)(17,18)(19,27)(20,21)(22,24)(23,25)(26,31)(28,29)(30,32)(33,34,38,42)(35,39,45,40)(36,37,41,47)(43,44,48,46)(1,3)(2,5)(4,11)(6,9)(7,14)(8,10)(12,16)(13,15)(17,19,23,22)(18,24,25,27)(20,30,26,28)(21,29,31,32)(33,35)(34,39)(36,43)(37,44)(38,45)(40,42)(41,48)(46,47)(4,12)(7,15)(11,16)(13,14)(18,25)(20,26)(24,27)(28,30)(33,35,38,45)(34,39,42,40)(36,43,41,48)(37,44,47,46)(1,4)(2,7)(3,11)(5,14)(6,12)(8,13)(9,16)(10,15)(17,20,23,26)(18,21,25,31)(19,28,22,30)(24,32,27,29)(33,35)(34,40)(36,43)(37,46)(38,45)(39,42)(41,48)(44,47)(1,3)(2,8)(4,11)(5,10)(6,9)(7,13)(12,16)(14,15)(17,21)(18,26)(19,29)(20,25)(22,32)(23,31)(24,28)(27,30)(33,36)(34,37)(35,43)(38,41)(39,44)(40,46)(42,47)(45,48) involution — undirected(1,5,6,8)(2,9,10,3)(4,13,12,14)(7,11,15,16)(17,22,23,19)(18,24,25,27)(20,28,26,30)(21,29,31,32)(33,37)(34,41)(35,44)(36,42)(38,47)(39,48)(40,43)(45,46)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.