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