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