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