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