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