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