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