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