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