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