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