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