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