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