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