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