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