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