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