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