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)(17,18,23,25)(19,26,20,21)(22,24,31,32)(27,30,28,29)(33,34)(35,40)(36,45)(37,42)(38,46)(39,41)(43,48)(44,47)(3,9)(7,13)(10,15)(14,16)(17,19,23,20)(18,21,25,26)(22,27,31,28)(24,29,32,30)(33,35)(34,40)(36,37)(38,44)(39,43)(41,48)(42,45)(46,47)(2,6)(7,13)(8,11)(14,16)(34,41)(35,43)(36,46)(42,44) involution — undirected(1,2)(3,7)(4,8)(5,6)(9,13)(10,14)(11,12)(15,16)(17,20,23,19)(18,21,25,26)(22,28,31,27)(24,29,32,30)(33,36)(34,38)(35,37)(39,46)(40,44)(41,45)(42,48)(43,47)(1,3)(2,7)(4,10)(5,9)(6,13)(8,14)(11,16)(12,15)(17,21)(18,19)(20,25)(22,30)(23,26)(24,28)(27,32)(29,31)(33,37)(34,42)(35,36)(38,48)(39,47)(40,45)(41,44)(43,46) involution — undirected(1,4)(2,8)(3,10)(5,12)(6,11)(7,14)(9,15)(13,16)(17,22,23,31)(18,24,25,32)(19,27,20,28)(21,29,26,30)(33,38)(34,36)(35,44)(37,40)(39,45)(41,46)(42,43)(47,48)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.