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