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