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