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