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