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