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