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