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