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