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