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