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