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