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