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