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