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