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