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