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