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